The payments made to the personal attorney of President Donald Trump raise questions as to whether these companies violated anti-bribery rules, experts in federal bribery laws say.

The lawyer for the adult film star suing the president revealed that three companies, AT&T, Switzerland’s Novartis and Korea Aerospace Industries, made payments to Michael Cohen. Each company has confirmed the payments that the lawyer, Michael Avenatti, disclosed — AT&T T, +1.29% said its $200,000 was for insights into understanding the new administration, Korea Aerospace said its $150,000 was for legal insights on U.S. accounting standards and Novartis NVS, +0.79% said it paid $1.2 million for insights onto Trump’s stance on health policy….

Foreign companies that made payments could be in serious trouble back home, said one expert in the U.S. and international global laws that are supposed to deter bribery of government officials and influence peddling.